In this section, brief descriptions of the SELD datasets and systems are provided. Error analyses were performed on the SELD outputs of the two SELD systems which both ranked second in the team category for the 2020 and 2021 DCASE Challenges [1]}, [2]}. The 2021 version of the evaluation metrics was used in all analyses. For convenience, the TAU-NIGENS Spatial Sound Events 2020 and 2021 datasets used in the DCASE Challenges [3]}, [4]} are referred to here as the SELD 2020 and 2021 datasets, respectively.
